Impboyement in moulds foe casting lettees



fnltvg.. atm @frn Letters 'Patent No.'80,567, dated August 4, 1868 IMPROVEMENT IN MoULDs Ea CASTING LETTERS, aq.

atte tlgehzxle refttth tu in thse ttters rtent mit lurking mrt` uf tige snm.

Be it known that I, GEORGE F. SACK, of the city and county of New York, have invented anew and improved Mode of Producing Metal Letters and Ornaments; and I do hereby declare the following to be a full, clear, and

'exact description of my said invention, reference being had to the accompanying drawings. s

I first make a pattern ofthe letter or ornament desired, and grinding a smooth surface upon the: soft side of a piece of sepia, ('cuttle'sh,) and 'lay my pattern on a convenientspot ol` the smoothed surface, andpress vit thereon until the pattern isembedded in the sepia.

The mould produced'thereby is an accurate impression of the pattern, showing the finest lineaments thereof. The pattern is then removed. The counterpart to the mould is made of another piece of sepia. in the same manner.v Alittle channel is cut out in the sepia for the infusion of the melted metal. The two parts:- of the mould 4are itted together, and the melted metal is poured in the mould When cooled, the sepia is removed, and the casting will be found to `be a perfect reproduction of the pattern, requiring but little polishing to be rendered fit for application to its purpose. i

By this means, letters or trinkets are produced; which, \vitl1"otl1er moulds, could be rendered so neat and ornamental only by being chased or engraved.- Y

After the sepia is removed, the casting may be enamelled, burnished, gilded, 85e.

In the accompanying drawing- I Figure 1 represents the mould, produced in the manner described, an

Figure 2 the letter E Vcast therein. l

I- claim as my invention, and desire to`sccure by Letters Patent of the United States- A mould for casting letters and ornaments, which will retain an accurate impression of the most delicate lineaments of the pattern, made of a sepimor cuttle-sh bone, in the manner substantially as henein described,

and for the purpose mentioned. v

` GEORGE F. SACK.

Witnesses:

Guss. GoLDzIEB, JOSEPH GoLDscHEIDEn. 

